<!DOCTYPE html>
<html>
<head>
<title>Parallel Layout</title>
<!-- Copyright 1998-2016 by Northwoods Software Corporation. -->
<meta charset="UTF-8">
<script src="go.js"></script>
<link href="../assets/css/goSamples.css" rel="stylesheet" type="text/css" />  <!-- you don't need to use this -->
<script src="goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
<script src="ParallelLayout.js"></script>

<script id="code">
  function init() {
    if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
    var $ = go.GraphObject.make;  // for conciseness in defining templates

    myDiagram =
      $(go.Diagram, "myDiagramDiv",  // must be the ID or reference to div
        {
          layout: $(ParallelLayout,
                    { layerSpacing: 20, nodeSpacing: 10 })
        });

    // define the Node templates
    myDiagram.nodeTemplate =
      $(go.Node, "Auto",
        { locationSpot: go.Spot.Center },
        $(go.Shape, "Rectangle",
          { fill: "wheat", stroke: null, strokeWidth: 0 }),
        $(go.TextBlock, { margin: 3 },
          new go.Binding("text"))
      );

    myDiagram.nodeTemplateMap.add("Split",
      $(go.Node, "Auto",
        { locationSpot: go.Spot.Center },
        $(go.Shape, "Diamond",
          { fill: "deepskyblue", stroke: null, strokeWidth: 0,
            desiredSize: new go.Size(28, 28) }),
        $(go.TextBlock,
          new go.Binding("text"))
      ));

    myDiagram.nodeTemplateMap.add("Merge",
      $(go.Node, "Auto",
        { locationSpot: go.Spot.Center },
        $(go.Shape, "Circle",
          { fill: "deepskyblue", stroke: null, strokeWidth: 0,
            desiredSize: new go.Size(28, 28) }),
        $(go.TextBlock,
          new go.Binding("text"))
      ));

    // define the Link template to be minimal
    myDiagram.linkTemplate =
      $(go.Link,
        { routing: go.Link.Orthogonal, corner: 5, reshapable: true },
        $(go.Shape,
          { stroke: "gray", strokeWidth: 1.5 })
      );

    // define the Group template to be fairly simple
    myDiagram.groupTemplate =
      $(go.Group, "Auto",
        {
          selectable: false,
          layout: $(ParallelLayout,
                    { layerSpacing: 20, nodeSpacing: 10 })
        },
        $(go.Shape, { fill: "transparent", stroke: "darkgoldenrod" }),
        $(go.Placeholder, { padding: 10 }),
        $("SubGraphExpanderButton", { alignment: go.Spot.TopLeft })
      );

    var model = $(go.GraphLinksModel);
    model.nodeDataArray = [
      { key: -1, isGroup: true },
      { key: -2, isGroup: true },
      { key: -3, isGroup: true },

      { key: 1, text: "S", category: "Split", group: -1 },
      { key: 2, text: "C", group: -1 },
      { key: 3, text: "Longer Node", group: -1 },
      { key: 4, text: "A", group: -1 },
      { key: 5, text: "B\nB", group: -1 },
      { key: 6, text: "Another", group: -1 },
      { key: 9, text: "J", category: "Merge", group: -1 },
      { key: 11, text: "T", category: "Split", group: -2 },
      { key: 12, text: "C", group: -2 },
      { key: 13, text: "Here", group: -2 },
      { key: 14, text: "D", group: -2 },
      { key: 15, text: "Everywhere", group: -2 },
      { key: 16, text: "EEEEE", group: -2 },
      { key: 19, text: "K", category: "Merge", group: -2 },
      { key: 21, text: "U", category: "Split", group: -3 },
      { key: 22, text: "F", group: -3 },
      { key: 23, text: "Medium\nTall\nNode", group: -3 },
      { key: 24, text: "G", group: -3 },
      { key: 25, text: "AS", group: -3 },
      { key: 26, text: "H\nHH\nHHH", group: -3 },
      { key: 27, text: "I", group: -3 },
      { key: 29, text: "L", category: "Merge", group: -3 },
      { key: 101, text: "0", category: "Split" },
      { key: 107, text: "ABCDEFG" },
      { key: 109, text: "*", category: "Merge" }
    ];
    model.linkDataArray = [
      { from: 1, to: 2 },
      { from: 2, to: 3 },
      { from: 3, to: 4 },
      { from: 4, to: 9 },
      { from: 1, to: 5 },
      { from: 5, to: 6 },
      { from: 6, to: 9 }, 
      { from: 9, to: 11 },
      { from: 9, to: 21 },
      { from: 11, to: 12 },
      { from: 12, to: 13 },
      { from: 13, to: 14 },
      { from: 14, to: 19 },
      { from: 11, to: 15 },
      { from: 15, to: 16 },
      { from: 16, to: 19 },
      { from: 21, to: 22 },
      { from: 22, to: 24 },
      { from: 24, to: 26 },
      { from: 23, to: 29 },
      { from: 21, to: 25 },
      { from: 25, to: 23 },
      { from: 21, to: 27 },
      { from: 26, to: 29 },
      { from: 27, to: 29 },
      { from: 101, to: 1 },
      { from: 19, to: 109 },
      { from: 29, to: 107 },
      { from: 107, to: 109 }
    ];
    myDiagram.model = model;
  }
</script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px black; background: white; width: 100%; height: 500px"></div>
  <p>
    This sample demonstrates a custom <a>TreeLayout</a>, ParallelLayout,
    which assumes that there is a single "Split" node that is the root of a tree,
    other than links that connect with a single "Merge" node.
    The layout is defined in its own file, as <a href="ParallelLayout.js">ParallelLayout.js</a>.
  </p>
  <p>
    Both the <a>Diagram.layout</a> and the <a>Group.layout</a> are instances of ParallelLayout,
    allowing for nested layouts that appear in parallel.
  </p>
</div>
</body>
</html>